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Celis M, Navarro Y, Serrano N, Martínez D, Nieto W. B-cell lymphocytosis in relatives of Colombian patients with chronic B-cell lymphoproliferative disorders. Biomedica 2023; 43:66-78. [PMID: 38207149 PMCID: PMC10895924 DOI: 10.7705/biomedica.7099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Accepted: 10/06/2023] [Indexed: 01/13/2024]
Abstract
Introduction. Monoclonal B-cell lymphocytosis generally precedes chronic lymphocytic leukemia, affecting about 12% of the healthy adult population. This frequency increases in relatives of patients with chronic B-cell lymphoproliferative disorders. Objective. To determine the frequency of monoclonal B-cell lymphocytosis in relatives of patients with chronic B-cell lymphoproliferative disorders, their immunophenotypic/cytogenetic characteristics, a possible relationship with infectious agents, and short-term follow-up in the Colombian population. Materials and methods. Fifty healthy adults with a family history of chronic B-cell lymphoproliferative disorders were studied using multiparametric flow cytometry, cytogenetic/serological testing, lifestyle survey, and 2-year follow-up. Results. The frequency of monoclonal B-cell lymphocytosis found was 8%, with a predominance of female gender and advanced age, increasing to 12.5% for individuals with a family history of chronic lymphocytic leukemia. Three out of four individuals presented chronic lymphocytic leukemia-type immunophenotype, all with low counts. In turn, a significantly higher number of cells/μl is observed in these individuals in T lymphocyte subpopulations, together with a greater predisposition to the disease. The described clonal populations increase over time in a non-significant manner. Conclusions. The frequency and behavior of monoclonal B-cell lymphocytosis in patients with family history of chronic B-cell lymphoproliferative disorders are like those found in related studies, which suggests that there is no involvement of more relevant genes that can trigger uncontrolled clonal proliferation, but that generates immunological deregulation that could justify a greater risk of serious infection in these individuals.
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Affiliation(s)
- Mike Celis
- Doctorado en Ciencias Biomédicas, Facultad de Salud, Universidad del Valle, Cali, Colombia; Instituto de Investigación Masira, Facultad de Ciencias Médicas y de la Salud, Universidad de Santander, Bucaramanga, Colombia.
| | - Yohanna Navarro
- Grupo de Investigación Biomédica Traslacional, Hospital Internacional de Colombia, Floridablanca, Colombia.
| | - Norma Serrano
- Grupo de Investigación Biomédica Traslacional, Hospital Internacional de Colombia, Floridablanca, Colombia.
| | - Daniel Martínez
- Instituto de Investigación Masira, Facultad de Ciencias Médicas y de la Salud, Universidad de Santander, Bucaramanga, Colombia.
| | - Wendy Nieto
- Grupo de Investigación Biomédica Traslacional, Hospital Internacional de Colombia, Floridablanca, Colombia.
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Murillo R, Pinto-Martínez N, Serrano N, Uribe C, Navarro E, Duque J, Yepes A, Olaya L, Mariño C, Morales OL, Erazo-Muñoz MA, Sánchez-Vega DC, Martínez-Ramos N. Use of complementary and alternative medicine by cancer patients in Colombia. BMC Complement Med Ther 2023; 23:321. [PMID: 37710213 PMCID: PMC10500828 DOI: 10.1186/s12906-023-04144-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 08/28/2023] [Indexed: 09/16/2023] Open
Abstract
BACKGROUND The use of complementary and alternative medicines (CAM) among cancer patients varies greatly. The available data suggest an increasing use of CAM over time and a higher prevalence in low- and middle-income countries. However, no reliable data are available from Latin America. Accordingly, we examined the prevalence of CAM use among cancer patients from six Colombian regions. METHODS We conducted a survey on cancer patients attending comprehensive cancer centres in six capital cities from different regions. The survey was designed based on a literature review and information gathered through focus groups on CAM terminology in Colombia. Independent random samples of patients from two comprehensive cancer centres in every city were obtained. Patients 18 years and older with a histopathological diagnosis of cancer undergoing active treatment were eligible. The prevalence of CAM use is reported as a percentage with the corresponding confidence interval. CAM types are reported by region. The sociodemographic and clinical characteristics of CAM users and non-users were compared using Chi square and t tests. RESULTS In total, 3117 patients were recruited. The average age 59.6 years old, and 62.8% were female. The prevalence of CAM use was 51.7%, and compared to non-users, CAM users were younger, more frequently women, affiliated with the health insurance plan for low-income populations and non-Catholic. We found no differences regarding the clinical stage or treatment modality, but CAM users reported more treatment-related side effects. The most frequent types of CAM were herbal products, specific foods and vitamins, and individually, soursop was the most frequently used product. Relevant variability between regions was observed regarding the prevalence and type of CAM used (range: 36.6% to 66.7%). The most frequent reason for using CAM was symptom management (30.5%), followed by curative purposes (19.5%). CONCLUSIONS The prevalence of CAM use among cancer patients in Colombia is high in general, and variations between regions might be related to differences in cultural backgrounds and access to comprehensive cancer care. The most frequently used CAM products and practices have little scientific support, suggesting the need to enhance integrative oncology research in the country.
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Affiliation(s)
- Raúl Murillo
- Hospital Universitario San Ignacio, Diagonal 70B 214 Este Apt 104, Bogotá, Colombia.
- Pontificia Universidad Javeriana, Bogotá, Colombia.
| | | | - Norma Serrano
- Hospital Internacional de Colombia-Fundación Cardiovascular, Bucaramanga, Colombia
| | - Claudia Uribe
- Universidad Autónoma de Bucaramanga, Bucaramanga, Colombia
| | | | - Jorge Duque
- Oncólogos Asociados de Imbanaco, Cali, Colombia
| | - Andrés Yepes
- Clínica de Oncología Astorga, Medellín, Colombia
| | - Laura Olaya
- Unidad Oncológica Surcolombiana, Neiva, Colombia
| | - Carolina Mariño
- Pontificia Universidad Javeriana, Bogotá, Colombia
- Universidad de Valencia, Valencia, Spain
| | - Olga Lucia Morales
- Hospital Universitario San Ignacio, Diagonal 70B 214 Este Apt 104, Bogotá, Colombia
- Pontificia Universidad Javeriana, Bogotá, Colombia
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Orozco-Levi M, Reyes C, Quintero N, Tiga-Loza D, Reyes M, Sanabria S, Pizarro C, De Hoyos J, Serrano N, Castillo V, Ramírez-Sarmiento A. Clinical Proof of Concept for Stabilization of Tracheostomy Tubes Using Novel DYNAtraq Device. Med Devices (Auckl) 2022; 15:215-227. [PMID: 35859660 PMCID: PMC9289456 DOI: 10.2147/mder.s366829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 06/15/2022] [Indexed: 11/26/2022]
Abstract
Introduction Tracheostomy is one of the most common surgical strategies in intensive care units (ICU) and provides relevant clinical benefit for multiple indications. However, the complications associated with its use range from 5 to 40% according to different series. The risk of these complications could be reduced if fixation strategies and alignment of the tracheostomy tube with respect to the tracheal axis are improved. Aim To build a functional device of technological innovation in respiratory medicine for the fixation and alignment of tracheostomy cannula (acronym DYNAtraq) and to evaluate its feasibility and safety in a pilot study in mechanically ventilated patients. Methods Study carried out in four phases: (1) design engineering and functional prototyping of the device; (2) study of cytotoxicity and tolerance to the force of traction and push; (3) pilot study of feasibility and safety of its use in tracheostomized and mechanically ventilated patients; and (4) health workers satisfaction study. Results The design of the innovative DYNAtraq device included, on the one hand, a connector with very little additional dead space to be inserted between the cannula and the ventilation tubes, and, on the other hand, a shaft with two supports for adhesion to the skin of the thorax with very high tolerance (several kilograms) to pull and push. In patients, the device corrected the malpositioned tracheostomy tubes for the latero-lateral (p < 0.001) and cephalo-caudal angles (p < 0.001). Its effect was maintained throughout the follow-up time (p < 0.001). The use of DYNAtraq did not induce serious adverse events and showed a 70% protective effect for complications (RR = 0.3, p < 0.001) in patients. Conclusion DYNAtraq is a new device for respiratory medicine that allows the stabilization, alignment and fixation of tracheostomy tubes in mechanically ventilated patients. Its use provides additional benefits to traditional forms of support as it corrects misalignment and increases tolerance to habitual or forced movements. DYNAtraq is a safe element and can reduce the complications of tracheostomy tubes.
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Affiliation(s)
- Mauricio Orozco-Levi
- Respiratory Department, Hospital Internacional de Colombia, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia.,Group of Research in Muscle, Training and Lung Diseases (EMICON), Ministerio de Ciencia y Tecnología (MINCIENCIAS), Bogotá, Cundinamarca, Colombia.,Department of Medicine, and Facultad de Ciencias Médicas y de la Salud, Universidad de Santander (UDES), Bucaramanga, Santander, Colombia
| | - Carlos Reyes
- Department of Critical Care, Hospital Internacional de Colombia, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia
| | - Neikel Quintero
- Respiratory Department, Hospital Internacional de Colombia, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia
| | - Diana Tiga-Loza
- Respiratory Department, Hospital Internacional de Colombia, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia.,Group of Research in Muscle, Training and Lung Diseases (EMICON), Ministerio de Ciencia y Tecnología (MINCIENCIAS), Bogotá, Cundinamarca, Colombia.,Department of Medicine, and Facultad de Ciencias Médicas y de la Salud, Universidad de Santander (UDES), Bucaramanga, Santander, Colombia
| | - Mabel Reyes
- Respiratory Department, Hospital Internacional de Colombia, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia.,Group of Research in Muscle, Training and Lung Diseases (EMICON), Ministerio de Ciencia y Tecnología (MINCIENCIAS), Bogotá, Cundinamarca, Colombia.,Department of Medicine, and Facultad de Ciencias Médicas y de la Salud, Universidad de Santander (UDES), Bucaramanga, Santander, Colombia
| | - Sandra Sanabria
- Bioengineering Research Group, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia
| | - Camilo Pizarro
- Department of Critical Care, Hospital Internacional de Colombia, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia
| | - Juan De Hoyos
- Bioengineering Research Group, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia
| | - Norma Serrano
- Research Center, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia
| | - Victor Castillo
- Bioengineering Research Group, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia.,CEO, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia
| | - Alba Ramírez-Sarmiento
- Respiratory Department, Hospital Internacional de Colombia, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia.,Group of Research in Muscle, Training and Lung Diseases (EMICON), Ministerio de Ciencia y Tecnología (MINCIENCIAS), Bogotá, Cundinamarca, Colombia.,Department of Medicine, and Facultad de Ciencias Médicas y de la Salud, Universidad de Santander (UDES), Bucaramanga, Santander, Colombia.,Research Center, Fundación Cardiovascular de Colombia (FCV), Floridablanca, Santander, Colombia
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Salazar L, Arora L, Botia M, Niño MA, Figueredo A, Alvarado J, Serrano N, Riaño C, Pizarro C. Somatic Support with Veno-venous ECMO in a Pregnant Woman with Brain Death: A Case Report. ASAIO J 2022; 68:e16-e18. [PMID: 33709988 DOI: 10.1097/mat.0000000000001411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Supporting homeostasis in a pregnant woman with brain death to achieve fetal viability is called somatic support. We present a case of young pregnant woman at 21 weeks' gestation who developed acute respiratory distress syndrome secondary to influenza A H2N3 infection requiring veno-venous extracorporeal membrane oxygenation (VV ECMO) support for refractory hypoxemia. The clinical course was complicated by intracranial hemorrhage and subsequent brain death. After multidisciplinary team discussion with her family, consensus was reached to continue somatic support with VV ECMO to enable fetal development to attain extrauterine viability. The challenging clinical, ethical, and legal concerns are discussed.
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Affiliation(s)
- Leonardo Salazar
- From the Department of Intensive Care, Fundación Cardiovascular de Colombia, Bucaramanga, Colombia
| | - Lovkesh Arora
- Department of Anesthesia & Critical Care, University of Iowa Hospitals & Clinics, Carver College of Medicine, Iowa City, IA
| | - Maria Botia
- From the Department of Intensive Care, Fundación Cardiovascular de Colombia, Bucaramanga, Colombia
| | - Maria Azucena Niño
- Department of Pediatrics, Universidad Industrial de Santander, Bucaramanga, Colombia
| | - Antonio Figueredo
- Department of Cardiac Surgery, Fundación Cardiovascular de Colombia, Bucaramanga, Colombia
| | - Jorge Alvarado
- Department of Pediatrics, Fundación Cardiovascular de Colombia, Bucaramanga, Colombia
| | - Norma Serrano
- Department of Medical Research, Fundación Cardiovascular de Colombia, Bucaramanga, Colombia
| | - Carlos Riaño
- Department of Obstetrics and Gynecology, Fundación Cardiovascular de Colombia, Bucaramanga, Colombia
| | - Camilo Pizarro
- From the Department of Intensive Care, Fundación Cardiovascular de Colombia, Bucaramanga, Colombia
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Jiménez KM, Morel A, Parada-Niño L, Alejandra González-Rodriguez M, Flórez S, Bolívar-Salazar D, Becerra-Bayona S, Aguirre-García A, Gómez-Murcia T, Fernanda Castillo L, Carlosama C, Ardila J, Vaiman D, Serrano N, Laissue P. Identifying new potential genetic biomarkers for HELLP syndrome using massive parallel sequencing. Pregnancy Hypertens 2020; 22:181-190. [PMID: 33059327 DOI: 10.1016/j.preghy.2020.09.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 07/20/2020] [Accepted: 09/05/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND Preeclampsia (PE) is a frequently occurring multisystemic disease affecting ~5% of pregnancies. PE patients may develop HELLP syndrome (haemolysis, elevated liver enzymes, and low platelet), a mother and foetus life-threatening condition. Research into HELLP's genetic origin has been relatively unsuccessful, mainly because normal placental function and blood pressure regulation involve the fine-regulation of hundreds of genes. OBJECTIVE To identify new genes and mutations constituting potential biomarkers for HELLP syndrome. STUDY DESIGN The present case-control study involved whole-exome sequencing of 79 unrelated HELLP women. Candidate variants were screened in a control population constituted by 176 individuals. Stringent bioinformatics filters were used for selecting potentially etiological sequence variants in a subset of 487 genes. We used robust in silico mutation modelling for predicting the potential effect on protein structure. RESULTS We identified numerous sequence variants in genes related to angiogenesis/coagulation/blood pressure regulation, cell differentiation/communication/adhesion, cell cycle and transcriptional gene regulation, extracellular matrix biology, lipid metabolism and immunological response. Five sequence variants generated premature stop codons in genes playing an essential role in placental physiology (STOX1, PDGFD, IGF2, MMP1 and DNAH11). Six variants (ERAP1- p.Ile915Thr, ERAP2- p.Leu837Ser, COMT-p.His192Gln, CSAD-p.Pro418Ser, CDH1- p.Ala298Thr and CCR2-p.Met249Lys) led to destabilisation of protein structure as they had significant energy and residue interaction-related changes. We identified at least two mutations in 57% of patients, arguing in favour of a polygenic origin for the HELLP syndrome. CONCLUSION Our results provide novel evidence regarding PE/HELLP's genetic origin, leading to new biomarkers, having potential clinical usefulness, being proposed.
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Affiliation(s)
- Karen Marcela Jiménez
- Center For Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Adrien Morel
- Center For Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Laura Parada-Niño
- Center For Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - María Alejandra González-Rodriguez
- Center For Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Stephanie Flórez
- Hospital Universitario Mayor Méderi, Universidad del Rosario, Bogotá, Colombia
| | - David Bolívar-Salazar
- Center For Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | | | - Angel Aguirre-García
- Center For Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia; Hospital Universitario Mayor Méderi, Universidad del Rosario, Bogotá, Colombia
| | - Tatiana Gómez-Murcia
- Center For Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia; Hospital Universitario Mayor Méderi, Universidad del Rosario, Bogotá, Colombia
| | - Luisa Fernanda Castillo
- Center For Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Carolina Carlosama
- Center For Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia
| | - Javier Ardila
- Hospital Universitario Mayor Méderi, Universidad del Rosario, Bogotá, Colombia
| | - Daniel Vaiman
- Inserm U1016, CNRS UMR8104, Institut Cochin, équipe FGTB, 24, rue du faubourg Saint-Jacques, 75014 Paris, France
| | - Norma Serrano
- Research Centre, Fundación Cardiovascular de Colombia (FCV), Bucaramanga, Colombia
| | - Paul Laissue
- Center For Research in Genetics and Genomics-CIGGUR, GENIUROS Research Group, School of Medicine and Health Sciences, Universidad del Rosario, Bogotá, Colombia; Inserm U1016, CNRS UMR8104, Institut Cochin, équipe FGTB, 24, rue du faubourg Saint-Jacques, 75014 Paris, France; Orphan Diseases Group, Biopas Laboratoires, Bogotá, Colombia.
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Oliver J, Quezada Urban R, Franco Cortés CA, Díaz Velásquez CE, Montealegre Paez AL, Pacheco-Orozco RA, Castro Rojas C, García-Robles R, López Rivera JJ, Gaitán Chaparro S, Gómez AM, Suarez Obando F, Giraldo G, Maya MI, Hurtado-Villa P, Sanchez AI, Serrano N, Orduz Galvis AI, Aruachan S, Nuñez Castillo J, Frecha C, Riggi C, Jauk F, Gómez García EM, Carranza CL, Zamora V, Torres Mejía G, Romieu I, Castañeda CA, Castillo M, Gitler R, Antoniano A, Rojas Jiménez E, Romero Cruz LE, Vallejo Lecuona F, Delgado Enciso I, Martínez Rizo AB, Flores Carranza A, Benites Godinez V, Méndez Catalá CF, Herrera LA, Chirino YI, Terrazas LI, Perdomo S, Vaca Paniagua F. Latin American Study of Hereditary Breast and Ovarian Cancer LACAM: A Genomic Epidemiology Approach. Front Oncol 2019; 9:1429. [PMID: 31921681 PMCID: PMC6933010 DOI: 10.3389/fonc.2019.01429] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 12/02/2019] [Indexed: 12/29/2022] Open
Abstract
Purpose: Hereditary Breast and Ovarian Cancer (HBOC) syndrome is responsible for ~5-10% of all diagnosed breast and ovarian cancers. Breast cancer is the most common malignancy and the leading cause of cancer-related mortality among women in Latin America (LA). The main objective of this study was to develop a comprehensive understanding of the genomic epidemiology of HBOC throughout the establishment of The Latin American consortium for HBOC-LACAM, consisting of specialists from 5 countries in LA and the description of the genomic results from the first phase of the study. Methods: We have recruited 403 individuals that fulfilled the criteria for HBOC from 11 health institutions of Argentina, Colombia, Guatemala, Mexico and Peru. A pilot cohort of 222 individuals was analyzed by NGS gene panels. One hundred forty-three genes were selected on the basis of their putative role in susceptibility to different hereditary cancers. Libraries were sequenced in MiSeq (Illumina, Inc.) and PGM (Ion Torrent-Thermo Fisher Scientific) platforms. Results: The overall prevalence of pathogenic variants was 17% (38/222); the distribution spanned 14 genes and varied by country. The highest relative prevalence of pathogenic variants was found in patients from Argentina (25%, 14/57), followed by Mexico (18%, 12/68), Guatemala (16%, 3/19), and Colombia (13%, 10/78). Pathogenic variants were found in BRCA1 (20%) and BRCA2 (29%) genes. Pathogenic variants were found in other 12 genes, including high and moderate risk genes such as MSH2, MSH6, MUTYH, and PALB2. Additional pathogenic variants were found in HBOC unrelated genes such as DCLRE1C, WRN, PDE11A, and PDGFB. Conclusion: In this first phase of the project, we recruited 403 individuals and evaluated the germline genetic alterations in an initial cohort of 222 patients among 4 countries. Our data show for the first time in LA the distribution of pathogenic variants in a broad set of cancer susceptibility genes in HBOC. Even though we used extended gene panels, there was still a high proportion of patients without any detectable pathogenic variant, which emphasizes the larger, unexplored genetic nature of the disease in these populations.
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Affiliation(s)
- Javier Oliver
- Medical Oncology Service, Hospitales Universitarios Regional y Virgen de la Victoria, Institute of Biomedical Research in Malaga, CIMES, University of Málaga, Málaga, Spain
- Laboratorio de Secuenciación, Instituto de Medicina Traslacional e Ingeniería Biomédica, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
- Laboratorio Nacional en Salud, Diagnóstico Molecular y Efecto Ambiental en Enfermedades Crónico-Degenerativas, Facultad de Estudios Superiores Iztacala, Tlalnepantla de Baz, Mexico
| | - Rosalía Quezada Urban
- Laboratorio Nacional en Salud, Diagnóstico Molecular y Efecto Ambiental en Enfermedades Crónico-Degenerativas, Facultad de Estudios Superiores Iztacala, Tlalnepantla de Baz, Mexico
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla de Baz, Mexico
| | - Claudia Alejandra Franco Cortés
- Laboratorio de Secuenciación, Instituto de Medicina Traslacional e Ingeniería Biomédica, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Clara Estela Díaz Velásquez
- Laboratorio Nacional en Salud, Diagnóstico Molecular y Efecto Ambiental en Enfermedades Crónico-Degenerativas, Facultad de Estudios Superiores Iztacala, Tlalnepantla de Baz, Mexico
| | - Ana Lorena Montealegre Paez
- Instituto de Nutrición, Genética y Metabolismo, Facultad de Medicina, Universidad El Bosque, Bogota, Colombia
| | | | - Carlos Castro Rojas
- Instituto de Nutrición, Genética y Metabolismo, Facultad de Medicina, Universidad El Bosque, Bogota, Colombia
| | - Reggie García-Robles
- Instituto de Nutrición, Genética y Metabolismo, Facultad de Medicina, Universidad El Bosque, Bogota, Colombia
| | - Juan Javier López Rivera
- Grupo INPAC, Organización Keralty, Departamento de Genética, Clínica Universitaria Colombia, Bogotá, Colombia
| | - Sandra Gaitán Chaparro
- Grupo INPAC, Organización Keralty, Facultad de Medicina, Fundación Universitaria Sanitas, Bogotá, Colombia
| | - Ana Milena Gómez
- Servicio de Genética, Hospital Universitario San Ignacio, Bogotá, Colombia
| | - Fernando Suarez Obando
- Servicio de Genética, Hospital Universitario San Ignacio, Bogotá, Colombia
- Instituto de Genética Humana, Facultad de Medicina, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Gustavo Giraldo
- Clínica Universitaria Bolivariana, Pontificia Universidad Bolivariana, Medellín, Colombia
| | - Maria Isabel Maya
- Clínica Universitaria Bolivariana, Pontificia Universidad Bolivariana, Medellín, Colombia
| | - Paula Hurtado-Villa
- Departamento Ciencias Básicas de Salud, Facultad de Ciencias de la Salud, Pontificia Universidad Javeriana Cali, Cali, Colombia
- Centro Médico Imbanaco, Cali, Colombia
| | - Ana Isabel Sanchez
- Centro Médico Imbanaco, Cali, Colombia
- Departamento Materno Infantil, Facultad de Ciencias de la Salud, Pontificia Universidad Javeriana Cali, Cali, Colombia
| | - Norma Serrano
- Fundación Cardiovascular de Colombia, Centro de Investigaciones, Floridablanca, Colombia
| | | | - Sandra Aruachan
- Departamento de Investigación y Estudios Clínicos, IMAT - Oncomédica S.A., Montería, Colombia
| | - Johanna Nuñez Castillo
- Departamento de Investigación y Estudios Clínicos, IMAT - Oncomédica S.A., Montería, Colombia
| | - Cecilia Frecha
- Instituto de Medicina Traslacional e Ingeniería Biomédica, CONICET-Instituto Universitario del Hospital Italiano-Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Cecilia Riggi
- Servicio de Ginecología, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Federico Jauk
- Laboratorio de Secuenciación, Instituto de Medicina Traslacional e Ingeniería Biomédica, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | | | | | | | | | - Isabelle Romieu
- Instituto Nacional de Salud Pública, Cuernavaca, Mexico
- Hubert Department of Global Health, Emory University, Atlanta, GA, United States
| | - Carlos Arturo Castañeda
- Departamento de Oncología Médica, Instituto Nacional de Enfermedades Neoplásicas, Lima, Peru
| | - Miluska Castillo
- Departamento de Investigación, Instituto Nacional de Enfermedades Neoplásicas, Lima, Peru
| | | | | | - Ernesto Rojas Jiménez
- Laboratorio Nacional en Salud, Diagnóstico Molecular y Efecto Ambiental en Enfermedades Crónico-Degenerativas, Facultad de Estudios Superiores Iztacala, Tlalnepantla de Baz, Mexico
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla de Baz, Mexico
| | - Luis Enrique Romero Cruz
- Laboratorio Nacional en Salud, Diagnóstico Molecular y Efecto Ambiental en Enfermedades Crónico-Degenerativas, Facultad de Estudios Superiores Iztacala, Tlalnepantla de Baz, Mexico
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla de Baz, Mexico
| | - Fernando Vallejo Lecuona
- Laboratorio Nacional en Salud, Diagnóstico Molecular y Efecto Ambiental en Enfermedades Crónico-Degenerativas, Facultad de Estudios Superiores Iztacala, Tlalnepantla de Baz, Mexico
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla de Baz, Mexico
| | | | | | | | | | - Claudia Fabiola Méndez Catalá
- Laboratorio Nacional en Salud, Diagnóstico Molecular y Efecto Ambiental en Enfermedades Crónico-Degenerativas, Facultad de Estudios Superiores Iztacala, Tlalnepantla de Baz, Mexico
| | - Luis Alonso Herrera
- Unidad de Investigación Biomédica en Cáncer, Instituto de Investigaciones Biomédicas-Instituto Nacional de Cancerología, Ciudad de México, Mexico
| | - Yolanda Irasema Chirino
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla de Baz, Mexico
| | - Luis Ignacio Terrazas
- Laboratorio Nacional en Salud, Diagnóstico Molecular y Efecto Ambiental en Enfermedades Crónico-Degenerativas, Facultad de Estudios Superiores Iztacala, Tlalnepantla de Baz, Mexico
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla de Baz, Mexico
| | - Sandra Perdomo
- Instituto de Nutrición, Genética y Metabolismo, Facultad de Medicina, Universidad El Bosque, Bogota, Colombia
- Departamento de Patología, Hospital Universitario Fundación Santa Fe de Bogotá, Bogota, Colombia
| | - Felipe Vaca Paniagua
- Laboratorio Nacional en Salud, Diagnóstico Molecular y Efecto Ambiental en Enfermedades Crónico-Degenerativas, Facultad de Estudios Superiores Iztacala, Tlalnepantla de Baz, Mexico
- Unidad de Biomedicina, Facultad de Estudios Superiores Iztacala, UNAM, Tlalnepantla de Baz, Mexico
- Instituto Nacional de Cancerología, Ciudad de México, Mexico
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Abstract
BACKGROUND Metabolic syndrome (MS) is one of the conditions that increase the risk of developing cardiovascular diseases (CVD) and type-2 diabetes in the early future if it appears during childhood or adolescence. The purpose of the study to compare the MS prevalence of MS estimated in a representative sample of school-age population in Bucaramanga, Colombia, and the MS prevalence estimated in a subsample from the same population in the adolescent stage. METHODS An analytical cross-sectional survey (in the adolescent stage) (n=494) was carried out, nested in a population-based cohort assembled when children were of school age (n=1,282). Selection employed a bi-stage randomized sampling per neighborhoods and houses across the city. Sociodemographic and anthropometric variables, as well as cardiometabolic factors were analyzed in accordance with their distribution, and statistical significance tests were applied according to each case. MS was determined using the Adult Treatment Panel III (ATP III) and International Diabetes Federation (IDF) criteria. RESULTS Estimated MS prevalence in school age according to the ATP III criteria was 9.5% (95% CI: 8.0-11.3%) and according to the IDF criteria it was 8.0% (95% CI: 6.6-9.7%). At the time of follow up the prevalence of MS was 13.2% and 14.8% according to the ATP III and IDF criteria, respectively. CONCLUSIONS MS prevalence of MS increased in 4% from the school age (9.5%) to the adolescence (13.1%).
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Affiliation(s)
- Norma Serrano
- Fundación Cardiovascular de Colombia-FCV, Floridablanca, Santander, Colombia
| | - Cristina Villa-Roel
- Department of Emergency Medicine, University of Alberta, Edmonton, Alberta, Canadá
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8
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Serrano N, López-Sanz D, Bruña R, Garcés P, Rodríguez-Rojo IC, Marcos A, Crespo DP, Maestú F. Spatiotemporal Oscillatory Patterns During Working Memory Maintenance in Mild Cognitive Impairment and Subjective Cognitive Decline. Int J Neural Syst 2019; 30:1950019. [DOI: 10.1142/s0129065719500199] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Working memory (WM) is a crucial cognitive process and its disruption is among the earliest symptoms of Alzheimer’s disease. While alterations of the neuronal processes underlying WM have been evidenced in mild cognitive impairment (MCI), scarce literature is available in subjective cognitive decline (SCD). We used magnetoencephalography during a WM task performed by MCI [Formula: see text], SCD [Formula: see text] and healthy elders [Formula: see text] to examine group differences during the maintenance period (0–4000[Formula: see text]ms). Data were analyzed using time–frequency analysis and significant oscillatory differences were localized at the source level. Our results indicated significant differences between groups, mainly during the early maintenance (250–1250[Formula: see text]ms) in the theta, alpha and beta bands and in the late maintenance (2750–3750[Formula: see text]ms) in the theta band. MCI showed lower local synchronization in fronto-temporal cortical regions in the early theta–alpha window relative to controls [Formula: see text] and SCD [Formula: see text], and in the late theta window relative to controls [Formula: see text] and SCD [Formula: see text]. Early theta–alpha power was significantly correlated with memory scores [Formula: see text] and late theta power was correlated with task performance [Formula: see text] and functional activity scores [Formula: see text]. In the early beta window, MCI showed reduced power in temporo-posterior regions relative to controls [Formula: see text] and SCD [Formula: see text]. Our results may suggest that these alterations would reflect that memory-related networks are damaged.
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Affiliation(s)
- N. Serrano
- Department of Experimental Psychology, Complutense University of Madrid, Pozuelo de Alarcón, Madrid 28223, Spain
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology (CTB), Pozuelo de Alarcón, Madrid 28223, Spain
| | - D. López-Sanz
- Department of Experimental Psychology, Complutense University of Madrid, Pozuelo de Alarcón, Madrid 28223, Spain
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology (CTB), Pozuelo de Alarcón, Madrid 28223, Spain
| | - R. Bruña
- Department of Experimental Psychology, Complutense University of Madrid, Pozuelo de Alarcón, Madrid 28223, Spain
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology (CTB), Pozuelo de Alarcón, Madrid 28223, Spain
- CIBER’s Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, Madrid, Spain
| | - P. Garcés
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology (CTB), Pozuelo de Alarcón, Madrid 28223, Spain
| | - I. C. Rodríguez-Rojo
- Department of Experimental Psychology, Complutense University of Madrid, Pozuelo de Alarcón, Madrid 28223, Spain
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology (CTB), Pozuelo de Alarcón, Madrid 28223, Spain
| | - A. Marcos
- Neurology Department, San Carlos Clinical Hospital, Madrid, Spain
| | - D. Prada Crespo
- Centro de Prevención del Deterioro Cognitivo del Ayuntamiento, de Madrid Madrid, Spain
| | - F. Maestú
- Department of Experimental Psychology, Complutense University of Madrid, Pozuelo de Alarcón, Madrid 28223, Spain
- Laboratory of Cognitive and Computational Neuroscience (UCM-UPM), Center for Biomedical Technology (CTB), Pozuelo de Alarcón, Madrid 28223, Spain
- CIBER’s Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, Madrid, Spain
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9
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Slade A, Waters M, Serrano N. A Comprehensive Analysis of Diabetes Self-Management among with Men with Prostate Cancer in the United States: Evidence from the National Health and Nutrition Evaluation Survey. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Slade A, Waters M, Serrano N. Long-Term Trends in Sleep Disturbance and Prescription Sleep Aid Use among Cancer Survivors in the United States. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.2000] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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11
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Slade A, Waters M, Zhao S, Serrano N. Long-Term Trends in Use of Peripheral α-Adrenergic Antagonist and Antispasmodic Medications after Local Prostate Cancer Therapy: Evidence from a National Survey. Int J Radiat Oncol Biol Phys 2018. [DOI: 10.1016/j.ijrobp.2018.07.1237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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12
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Chipko C, Schutzer M, Serrano N, Anscher M. Using Time-Drive Activity-Based Costing in a Cost Analysis of Whole Brain Radiation Therapy Using Clinical Setup Versus CT Simulation Planning. Int J Radiat Oncol Biol Phys 2017. [DOI: 10.1016/j.ijrobp.2017.06.1540] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Jiménez-Brenes FM, López-Granados F, de Castro AI, Torres-Sánchez J, Serrano N, Peña JM. Quantifying pruning impacts on olive tree architecture and annual canopy growth by using UAV-based 3D modelling. Plant Methods 2017; 13:55. [PMID: 28694843 PMCID: PMC5500994 DOI: 10.1186/s13007-017-0205-3] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 07/04/2017] [Indexed: 05/03/2023]
Abstract
BACKGROUND Tree pruning is a costly practice with important implications for crop harvest and nutrition, pest and disease control, soil protection and irrigation strategies. Investigations on tree pruning usually involve tedious on-ground measurements of the primary tree crown dimensions, which also might generate inconsistent results due to the irregular geometry of the trees. As an alternative to intensive field-work, this study shows a innovative procedure based on combining unmanned aerial vehicle (UAV) technology and advanced object-based image analysis (OBIA) methodology for multi-temporal three-dimensional (3D) monitoring of hundreds of olive trees that were pruned with three different strategies (traditional, adapted and mechanical pruning). The UAV images were collected before pruning, after pruning and a year after pruning, and the impacts of each pruning treatment on the projected canopy area, tree height and crown volume of every tree were quantified and analyzed over time. RESULTS The full procedure described here automatically identified every olive tree on the orchard and computed their primary 3D dimensions on the three study dates with high accuracy in the most cases. Adapted pruning was generally the most aggressive treatment in terms of the area and volume (the trees decreased by 38.95 and 42.05% on average, respectively), followed by trees under traditional pruning (33.02 and 35.72% on average, respectively). Regarding the tree heights, mechanical pruning produced a greater decrease (12.15%), and these values were minimal for the other two treatments. The tree growth over one year was affected by the pruning severity and by the type of pruning treatment, i.e., the adapted-pruning trees experienced higher growth than the trees from the other two treatments when pruning intensity was low (<10%), similar to the traditionally pruned trees at moderate intensity (10-30%), and lower than the other trees when the pruning intensity was higher than 30% of the crown volume. CONCLUSIONS Combining UAV-based images and an OBIA procedure allowed measuring tree dimensions and quantifying the impacts of three different pruning treatments on hundreds of trees with minimal field work. Tree foliage losses and annual canopy growth showed different trends as affected by the type and severity of the pruning treatments. Additionally, this technology offers valuable geo-spatial information for designing site-specific crop management strategies in the context of precision agriculture, with the consequent economic and environmental benefits.
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Affiliation(s)
| | | | - A. I. de Castro
- Institute for Sustainable Agriculture, CSIC, 14004 Córdoba, Spain
| | | | - N. Serrano
- Institute of Agricultural Research and Training (IFAPA), 14004 Córdoba, Spain
| | - J. M. Peña
- Institute of Agricultural Sciences, CSIC, 28006 Madrid, Spain
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14
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López-Sanz D, Bruña R, Garcés P, Camara C, Serrano N, Rodríguez-Rojo IC, Delgado ML, Montenegro M, López-Higes R, Yus M, Maestú F. Alpha band disruption in the AD-continuum starts in the Subjective Cognitive Decline stage: a MEG study. Sci Rep 2016; 6:37685. [PMID: 27883082 PMCID: PMC5121589 DOI: 10.1038/srep37685] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 11/01/2016] [Indexed: 11/09/2022] Open
Abstract
The consideration of Subjective Cognitive Decline (SCD) as a preclinical stage of AD remains still a matter of debate. Alpha band alterations represent one of the most significant changes in the electrophysiological profile of AD. In particular, AD patients exhibit reduced alpha relative power and frequency. We used alpha band activity measured with MEG to study whether SCD and MCI elders present these electrophysiological changes characteristic of AD, and to determine the evolution of the observed alterations across AD spectrum. The total sample consisted of 131 participants: 39 elders without SCD, 41 elders with SCD and 51 MCI patients. All of them underwent MEG and MRI scans and neuropsychological assessment. SCD and MCI patients exhibited a similar reduction in alpha band activity compared with the no SCD group. However, only MCI patients showed a slowing in their alpha peak frequency compared with both SCD and no SCD. These changes in alpha band were related to worse cognition. Our results suggest that AD-related alterations may start in the SCD stage, with a reduction in alpha relative power. It is later, in the MCI stage, where the slowing of the spectral profile takes place, giving rise to objective deficits in cognitive functioning.
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Affiliation(s)
- D López-Sanz
- Laboratory of Cognitive and Computational Neuroscience, Center for Biomedical Technology, Complutense University of Madrid and Technical University of Madrid, Spain.,Department of Basic Psychology II, Complutense University of Madrid, Spain
| | - R Bruña
- Laboratory of Cognitive and Computational Neuroscience, Center for Biomedical Technology, Complutense University of Madrid and Technical University of Madrid, Spain
| | - P Garcés
- Laboratory of Cognitive and Computational Neuroscience, Center for Biomedical Technology, Complutense University of Madrid and Technical University of Madrid, Spain
| | - C Camara
- Laboratory of Cognitive and Computational Neuroscience, Center for Biomedical Technology, Complutense University of Madrid and Technical University of Madrid, Spain
| | - N Serrano
- Laboratory of Cognitive and Computational Neuroscience, Center for Biomedical Technology, Complutense University of Madrid and Technical University of Madrid, Spain.,Department of Basic Psychology II, Complutense University of Madrid, Spain
| | - I C Rodríguez-Rojo
- Laboratory of Cognitive and Computational Neuroscience, Center for Biomedical Technology, Complutense University of Madrid and Technical University of Madrid, Spain.,Department of Basic Psychology II, Complutense University of Madrid, Spain
| | - M L Delgado
- Department of Basic Psychology II, Complutense University of Madrid, Spain
| | - M Montenegro
- Memory Decline Prevention Center Madrid Salud, Ayuntamiento de Madrid, Spain
| | - R López-Higes
- Department of Basic Psychology II, Complutense University of Madrid, Spain
| | - M Yus
- Radiology Department, San Carlos University Hospital, Madrid, Spain
| | - F Maestú
- Laboratory of Cognitive and Computational Neuroscience, Center for Biomedical Technology, Complutense University of Madrid and Technical University of Madrid, Spain.,Department of Basic Psychology II, Complutense University of Madrid, Spain
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15
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Serrano N, Alam A, Rabender C, Weiss E, Anscher M, Mikkelsen R, Yakovlev V. Analysis of Circulating Tumor Exosomes: Their Role in the Tissue Microenvironment and Ability to Serve as a Biomarker for Recurrence in Lung Cancer. Int J Radiat Oncol Biol Phys 2016. [DOI: 10.1016/j.ijrobp.2016.06.2044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Pérez-Rodríguez M, Serrano N, Arquero O, Orgaz F, Moral J, López-Escudero FJ. The Effect of Short Irrigation Frequencies on the Development of Verticillium Wilt in the Susceptible Olive Cultivar 'Picual' under Field Conditions. Plant Dis 2016; 100:1880-1888. [PMID: 30682984 DOI: 10.1094/pdis-09-15-1018-re] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
The effect of irrigation frequency (daily [T1], biweekly [T2], and dryland [T3]) on Verticillium wilt of olive was studied in two fields that were naturally infested with Verticillium dahliae in southern Spain and planted to 'Picual' olive. Disease onset (average 61 weeks after planting) and disease incidence (average 75.6%) did not differ among irrigation treatments in both fields. Irrigation consistently increased disease development regarding dryland treatment, but this effect varied over time. In experiment I, T1, the relative area under the disease progress curve was greater on all recording dates (ranging from 15.8 to 33.7) in comparison with T3 (average 6.6). Data for experiment II were similar to this on the most favorable dates for disease (March to April). The T2 treatment value varied over time depending on the season and experimental field, being difficult to differentiate from the values of T1 and T3. Significant correlation between disease incidence and severity increments during spring and fall with the soil water content of the same or previous favorable seasons was observed. Through these correlations, we detected soil water contents of 24.3% (experiment I) and 23.6% (experiment II), where the increments of disease parameters remained at zero. Therefore, scheduling irrigation treatments based on rainfall may be a feasible method for maintaining the soil moisture below levels that favor for disease development.
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Affiliation(s)
- M Pérez-Rodríguez
- Departamento de Agronomía, Universidad de Córdoba, Campus Universitario de Rabanales, Edificio Celestino Mutis (C4), 14071, Córdoba, Spain
| | - N Serrano
- IFAPA, Centro 'Alameda del Obispo', 14080 Córdoba, Spain
| | - O Arquero
- IFAPA, Centro 'Alameda del Obispo', 14080 Córdoba, Spain
| | - F Orgaz
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas (CSIC), Apartado 4084, 14080, Córdoba, Spain
| | - J Moral
- Departamento de Agronomía, Universidad de Córdoba, Campus Universitario de Rabanales
| | - F J López-Escudero
- Departamento de Agronomía, Universidad de Córdoba, Campus Universitario de Rabanales
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17
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Rincon MY, Prada CE, Lopez M, Castillo V, Echeverria LE, Serrano N. Determination of Anti-Adeno-Associated Viral Vector Neutralizing Antibodies in Patients With Heart Failure in the Cardiovascular Foundation of Colombia (ANVIAS): Study Protocol. JMIR Res Protoc 2016; 5:e102. [PMID: 27282359 PMCID: PMC4919550 DOI: 10.2196/resprot.5535] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 03/22/2016] [Accepted: 04/04/2016] [Indexed: 01/03/2023] Open
Abstract
Background Recent progress in the pathophysiology of heart failure (HF) has led to the development of new therapeutic options such as gene therapy and the use of adeno-associated viral (AAV) vectors. Despite the promising results in early clinical trials of gene therapy for HF, various obstacles have been faced, such as the presence of neutralizing antibodies (NAbs) against the capsid vectors. NAb activity limits vector transduction levels and therefore diminishes the final therapeutic response. Recent studies evaluating the prevalence of NAbs in various populations found considerable geographic variability for each AAV serotype. However, the levels of NAbs in Latin American populations are unknown, becoming a limiting factor to conducting AAV vector therapeutic trials in this population. Objective The goal of this study is to determine for the first time, the prevalence of anti-AAV NAbs for the serotypes 1, 2, and 9 in HF patients from the city of Bucaramanga, Colombia, using the in vitro transduction inhibition assay. Methods We will conduct a cross-sectional study with patients who periodically attend the HF clinic of the Cardiovascular Foundation of Colombia and healthy volunteers matched for age and sex. For all participants, we will evaluate the NAb levels against serotypes AAV1, AAV2, and AAV9. We will determine NAb levels using the in vitro transduction inhibition assay. In addition, participants will answer a survey to evaluate their epidemiological and socioeconomic variables. Participation in the study will be voluntary and all participants will sign an informed consent document before any intervention. Results The project is in the first phase: elaboration of case report forms and the informed consent form, and design of the recruitment strategy. Patient recruitment is expected to begin in the spring of 2016. We expect to have preliminary results, including the titer of the viral vectors, multiplicity of infections that we will use for each serotype, and the general validation of the assay, at the end of 2016. The final results are expected mid-2017. Conclusions This project is the first effort to evaluate NAb levels against AAV1, AAV2, and AAV9 serotypes in patients with HF in Latin America. Our results will allow us to check the cross-reactivity response between the serotypes assessed, to describe the epidemiological characteristics of the participant population, and to set up a link with earlier reports of NAb prevalence in the literature.
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Affiliation(s)
- Melvin Y Rincon
- Centro de Investigaciones, Fundacion Cardiovascular de Colombia, Floridablanca, Colombia.
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18
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Serrano N, Adams B, Szentpetery S, Rogers L, Chang M, Moghanaki D. Can Stereotactic Ablative Radiation Therapy (SABR) Improve Patient Selection for Lung Cancer Surgery and Reduce Perioperative Mortality? Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Serrano N, McKay J, Song S. Optimal Dose and Fractionation Schemes for Recurrent Cutaneous T-Cell Lymphoma After Total Skin Electron Therapy. Int J Radiat Oncol Biol Phys 2015. [DOI: 10.1016/j.ijrobp.2015.07.1703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Pérez-Rodríguez M, Alcántara E, Amaro M, Serrano N, Lorite IJ, Arquero O, Orgaz F, López-Escudero FJ. The Influence of Irrigation Frequency on the Onset and Development of Verticillium Wilt of Olive. Plant Dis 2015; 99:488-495. [PMID: 30699544 DOI: 10.1094/pdis-06-14-0599-re] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
The influence of irrigation frequency on the onset and development of Verticillium wilt of olive (VWO) was studied. A split-plot design in microplots with naturally infested soil was established for studying four irrigation frequencies for three olive cultivars with differing levels of disease resistance. Final disease incidence (DI) and mortality in 'Picual' plants subjected to daily irrigation treatment (T1) reached values of 100 and 63%, respectively. For Picual-T1 samples, the area under the disease progress curve values were significantly different between 15 December 2012 and 15 July 2013 (14.8 to 42.8%) compared with the average results of the other treatments, which were weekly (T2), biweekly (T3), and deficit (T4) (0.4 to 11.5%). No significant differences between the irrigation treatments were observed in 'Arbequina', although the DI progressed consistently (60% in all treatments). In 'Frantoio', little disease developed. We conclude that a daily irrigation treatment encourages VWO development in susceptible Picual. Therefore, in susceptible cultivars growing in infested soils under daily irrigation regimes, the extension of irrigation frequency may reduce disease incidence. In the context of an integrated control, the use of resistant cultivars seems to be more relevant than the detrimental effects observed in frequent irrigation schedules.
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Affiliation(s)
- M Pérez-Rodríguez
- Departamento de Agronomía, Universidad de Córdoba, Campus Universitario de Rabanales, Edificio Celestino Mutis (C4), 14071, Córdoba, Spain
| | - E Alcántara
- Departamento de Agronomía, Universidad de Córdoba, Campus Universitario de Rabanales, Edificio Celestino Mutis (C4), 14071, Córdoba, Spain
| | - M Amaro
- Departamento de Agronomía, Universidad de Córdoba, Campus Universitario de Rabanales, Edificio Celestino Mutis (C4), 14071, Córdoba, Spain
| | - N Serrano
- IFAPA, Centro 'Alameda del Obispo', 14080 Córdoba, Spain
| | - I J Lorite
- IFAPA, Centro 'Alameda del Obispo', 14080 Córdoba, Spain
| | - O Arquero
- IFAPA, Centro 'Alameda del Obispo', 14080 Córdoba, Spain
| | - F Orgaz
- Instituto de Agricultura Sostenible, Consejo Superior de Investigaciones Científicas (CSIC), Apartado 4084, 14080, Córdoba, Spain
| | - F J López-Escudero
- Departamento de Agronomía, Universidad de Córdoba, Campus Universitario de Rabanales
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Buitrago-Lopez A, van den Hooven EH, Rueda-Clausen CF, Serrano N, Ruiz AJ, Pereira MA, Mueller NT. Socioeconomic status is positively associated with measures of adiposity and insulin resistance, but inversely associated with dyslipidaemia in Colombian children. J Epidemiol Community Health 2015; 69:580-7. [PMID: 25691273 DOI: 10.1136/jech-2014-204992] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 01/13/2015] [Indexed: 12/16/2022]
Abstract
BACKGROUND Low socioeconomic status (SES) has been associated with higher risk of cardiometabolic diseases in developed societies, but investigation of SES and cardiometabolic risk in children in less economically developed populations is sparse. We aimed to examine associations among SES and cardiometabolic risk factors in Colombian children. METHODS We used data from a population-based study of 1282 children aged 6-10 years from Bucaramanga, Colombia. SES was classified according to household wealth, living conditions and access to public utilities. Anthropometric and biochemical parameters were measured at a clinic visit. Cardiometabolic risk factors were analysed continuously using linear regression and as binary outcomes-according to established paediatric cut points-using logistic regression to calculate OR and 95% CIs. RESULTS Mean age of the children was 8.4 (SD 1.4) and 51.1% of the sample were boys. Odds of overweight/obesity, abdominal obesity and insulin resistance were greater among higher SES. Compared with the lowest SES stratum, children in the highest SES had higher odds of overweight/obesity (OR=3.25, 95% CI 1.89 to 5.57), abdominal obesity (OR=2.74, 95% CI 1.41 to 5.31) and insulin resistance (OR=2.60, 95% CI 1.81 to 3.71). In contrast, children in the highest SES had lower odds of hypertriglyceridaemia (triglycerides ≥90th centile; OR=0.28, 95% CI 0.14 to 0.54) and low (≤10th centile) high-density lipoprotein (HDL) cholesterol (OR=0.35, 95% CI 0.15 to 0.78). CONCLUSIONS In Colombian children, SES is directly associated with obesity and insulin resistance, but inversely associated with dyslipidaemia (hypertriglyceridaemia and low HDL cholesterol). Our findings highlight the need to analyse cardiometabolic risk factors separately in children and to carefully consider a population's level of economic development when studying their social determinants of cardiometabolic disease.
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Affiliation(s)
- Adriana Buitrago-Lopez
- Department of Epidemiology, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Edith H van den Hooven
- Department of Epidemiology, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Christian F Rueda-Clausen
- Department of Medicine, University of Alberta, Li Ka Shing Centre for Heath Research Innovation, University of Alberta, Edmonton, Alberta, Canada
| | - Norma Serrano
- Division of Research, Fundacion Cardiovascular de Colombia, Floridablanca, Santander, Colombia
| | - Alvaro J Ruiz
- Department of Clinical Epidemiology and Biostatistics, Pontificia Universidad Javeriana, Bogota DC, Colombia
| | - Mark A Pereira
- Division of Epidemiology & Community Health, University of Minnesota, Minneapolis, Minnesota, USA
| | - Noel T Mueller
- Department of Epidemiology, Mailman School of Public Health, Columbia University Medical Center, New York, New York, USA Institute of Human Nutrition and Department of Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, New York, USA
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Trapero C, Serrano N, Arquero O, Del Río C, Trapero A, López-Escudero FJ. Field Resistance to Verticillium Wilt in Selected Olive Cultivars Grown in Two Naturally Infested Soils. Plant Dis 2013; 97:668-674. [PMID: 30722191 DOI: 10.1094/pdis-07-12-0654-re] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The resistance of 11 olive cultivars to Verticillium dahliae was assessed in two experimental field trials. One-year-old rooted olive cuttings from the World Olive Germplasm Bank (IFAPA research center, Córdoba, Spain) were planted in a heavily infested field in Utrera (Sevilla province) and in a moderately infested field in Andújar (Jaén province) of southern Spain. Plants were assessed for Verticillium wilt resistance during 22 months based on disease severity and tree growth. Severe disease symptoms were observed 6 months after planting in both trials. Twenty months after planting in the heavily infested soil, V. dahliae had killed nearly all of the trees of 'Bodoquera', 'Cornicabra', 'Manzanilla de Sevilla', and 'Picual', demonstrating the elevated risk of planting susceptible cultivars in a soil heavily infested with V. dahliae. 'Arbequina', 'Koroneiki', 'Sevillenca', and especially 'Frantoio', 'Empeltre', and 'Changlot Real' showed a high level of disease resistance. However, all of them were affected by the disease. Although the field results confirmed the level of resistance previously obtained for these olive genotypes under controlled conditions, there were some discrepancies. This information will be useful in managing the disease and also in selecting new cultivars for the breeding of Verticillium wilt resistance.
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Affiliation(s)
- C Trapero
- Departamento de Agronomía, Universidad de Córdoba, Campus de Rabanales, Edif. C4, 14071, Córdoba, Spain
| | - N Serrano
- IFAPA Centro Alameda del Obispo, Apdo. 3092, 14080, Córdoba, Spain
| | - O Arquero
- IFAPA Centro Alameda del Obispo, Apdo. 3092, 14080, Córdoba, Spain
| | - C Del Río
- IFAPA Centro Alameda del Obispo, Apdo. 3092, 14080, Córdoba, Spain
| | - A Trapero
- Departamento de Agronomía. Universidad de Córdoba, Campus de Rabanales, Edif. C4, 14071, Córdoba, Spain
| | - F J López-Escudero
- Departamento de Agronomía. Universidad de Córdoba, Campus de Rabanales, Edif. C4, 14071, Córdoba, Spain
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Fujita M, Kohanbash G, McDonald HA, Delamarre L, Decker SA, Ohlfest JR, Okada H, Okada H, Kalinski P, Ueda R, Hoji A, Kohanbash G, Donegan TE, Mintz AH, Engh JA, Bartlett DL, Brown CK, Zeh H, Holtzman MP, Reinhart TA, Whiteside TL, Butterfield LH, Hamilton RL, Potter DM, Pollack IF, Salazar AM, Lieberman FS, Olin MR, Andersen BM, Grogan PT, Hunt M, Popescu FE, Xiong ZL, Seiler C, Forster CL, SantaCruz KS, Chen W, Blazar BR, Ohlfest JR, Hu J, Wheeler CJ, Phuphanich S, Rudnick J, Nuno M, Serrano N, Dantis J, Richardson J, Mazer M, Wang HQ, Chu R, Black KL, Yu J, Li YM, Vallera DA, Hall WA, Rudnick JD, Wheeler CJ, Phuphanich S, Chu RM, Mazer M, Wang H, Serrano N, Nuno M, Richardson J, Hu J, Black KL, Yu JS, Yang I, Han S, Tihan T, Wrensch M, Parsa AT, Li YM, Vallera DA, Hall WA, Andersen BM, Hunt MA, Gallardo JL, Seiler C, Pluhar GE, Ohlfest JR, Brown CE, Starr R, Martinez C, Bading J, Ressler JA, Badie B, Jensen MC, Glick RP, Ksendzovsky A, Zengou R, Polak P, Simonini V, Lichtor T, Feinstein D, Chow KK, Ahmed N, Salsman VS, Kew Y, Powell S, Grossman R, Heslop HE, Gottschalk S, Barnett FH, Marchetti V, Wang M, Johnson A, Scheppke L, Jacobson R, Nemerow G, Friedlander M, Ahmed N, Salsman V, Kew Y, Leen AM, Bollard CM, Powell S, Grossman R, Rooney C, Heslop HE, Gottschalk S, New PZ, Bollard CM, Salvoldo B, Heslop H. Immunotherapy. Neuro Oncol 2010. [DOI: 10.1093/neuonc/noq116.s5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Serrano N, Diaz LA, Paez C, Ortiz R, Beltran M, Monterrosa A, Meza C, Monsalve G, Sanin E, Saldarriaga W. P22 Elevated levels of pentraxin 3 in HELLP syndrome and preeclampsia: GenPE study. Pregnancy Hypertens 2010. [DOI: 10.1016/s2210-7789(10)60188-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Phuphanich S, Rudnick J, Mazer M, Wang HQ, Serrano N, Richardson J, Wheeler C, Singh M, Black K, Yu J. Immune response correlation with progression-free survival in glioblastoma following dendritic cell immunotherapy (ICT-107). J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.2097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Vicente C, Serrano N, Agustín MJ, Alonso V, Palomo P, Huarte R. Cardiotoxicity associated with trastuzumab in normal clinical practice. Farm Hosp 2009; 33:202-207. [PMID: 19712608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023] Open
Abstract
OBJECTIVE To evaluate the incidence of cardiotoxicity associated with treatment with trastuzumab in clinical practice by describing its characteristics, progress and associated risk factors. METHODS Retrospective observational study of patients with HER2-positive breast cancer treated with trastuzumab in the fi rst quarter of 2007 in a tertiary hospital. Follow-up was performed from start of treatment until the end of March 2008. The data sources used were the oncological computer program Oncowin® from the pharmacy department and the patient clinical history. We gathered variables related to patient baseline characteristics, treatment and safety. RESULTS The study included 61 patients. 19 women (32.8%) presented cardiotoxicity, which was the second most common adverse affect of those frequently attributed to the treatment. The average time for toxicity to appear was 7 months, with an average FEVI decrease of 15.6 +/- 9.1 points. In 63.2% of the patients it was symptomatic, and its most frequent manifestation was stress-induced dyspnoea, with a single case of congestive heart failure. Cardiotoxicity led to suspension of treatment in 22.9% of the total patients, which was definitive for 7 out of the 14 patients who interrupted the treatment. No statistically significant differences were found for the possible risk factors. CONCLUSIONS The incidence of cardiotoxicity in clinical practice is much higher than expected. The important clinical implication of this information and the increasing use of trastuzumab mean that there is a new challenge for the optimal treatment of HER2-positive breast cancer.
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Affiliation(s)
- C Vicente
- Servicio de Farmacia, Hospital Universitario Miguel Servet, Zaragoza, España.
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Vicente C, Serrano N, Agustín M, Alonso V, Palomo P, Huarte R. Cardiotoxicidad asociada a trastuzumab en la práctica clínica asistencial. Farmacia Hospitalaria 2009. [DOI: 10.1016/s1130-6343(09)72165-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Phuphanich S, Rudnick J, Chu R, Mazer M, Wang H, Serrano N, Francisco M, Wheeler C, Singh M, Yu JS. A phase I trial of tumor-associated antigen-pulsed dendritic cell immunotherapy for patients with brain stem glioma and glioblastoma. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.2032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
2032 Background: Previous immunotherapy trials for malignant glioma (Yu, J.,et al, Cancer Res. 2001;61:842–7 and 2004;64;4973–9) have demonstrated efficacy in generating a tumor specific immune response. Here we set out to determine feasibility and immunogenecity of dendritic vaccination with specific glioma-associated antigens. Methods: The goal of this study is to use tumor associated antigens (TAA) known to be expressed on gliomas and pulse dendritic cells with these antigens in an MHC compatible fashion using epitopes of HER-2, TRP-2, gp100, MAGE-1, IL13R alpha, and AIM-3. In this phase I trial, HLA-A1 and/or HLA-A2-positive patients with newly diagnosed or recurrent glioblastoma were eligible. Leukapheresis was used to isolate mononuclear cells which were differentiated into dendritic cells in culture, pulsed with tumor peptide, and then administered intradermally three times at 2-week intervals. Results: Twenty patients, 15 males and five females, were enrolled between November 2006 and December 2008 with one screen failure. The median patient age was 47 years (range: 26–65) and patients had a median Karnofsky performance status of 90% (range: 90–100). There were 16 newly diagnosed and three recurrent glioblastoma multiforme (GBM) patients, who underwent surgery prior to vaccination. Our data on 19 patients and 54 courses of dendritic cell vaccines demonstrate zero grade 3 /4 toxicities that were attributable to the vaccination. Thirteen patients continue to have stable disease (ranging from 15 to 115 weeks), six patients have demonstrated tumor progression. Median survival from surgery was 60 weeks (ranging from 26 to 115 weeks). Of 15 patients tested to date, six patients demonstrated an antigen-specific cytotoxic T-cell response to at least one antigen after vaccination. Only 17% of CTL responders (1/6) demonstrated tumor progression compared to 56% (5/9) of nonresponders to date. Conclusions: This phase I study demonstrated the feasibility, safety, and bioactivity of a TAA-pulsed dendritic cell vaccine for patients with glioblastoma progression free survival correlated with CTL response. [Table: see text]
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Affiliation(s)
- S. Phuphanich
- Cedars-Sinai Medical Center, Los Angeles, CA; Immunocellular Therapeutics Ltd., Woodland Hills, CA
| | - J. Rudnick
- Cedars-Sinai Medical Center, Los Angeles, CA; Immunocellular Therapeutics Ltd., Woodland Hills, CA
| | - R. Chu
- Cedars-Sinai Medical Center, Los Angeles, CA; Immunocellular Therapeutics Ltd., Woodland Hills, CA
| | - M. Mazer
- Cedars-Sinai Medical Center, Los Angeles, CA; Immunocellular Therapeutics Ltd., Woodland Hills, CA
| | - H. Wang
- Cedars-Sinai Medical Center, Los Angeles, CA; Immunocellular Therapeutics Ltd., Woodland Hills, CA
| | - N. Serrano
- Cedars-Sinai Medical Center, Los Angeles, CA; Immunocellular Therapeutics Ltd., Woodland Hills, CA
| | - M. Francisco
- Cedars-Sinai Medical Center, Los Angeles, CA; Immunocellular Therapeutics Ltd., Woodland Hills, CA
| | - C. Wheeler
- Cedars-Sinai Medical Center, Los Angeles, CA; Immunocellular Therapeutics Ltd., Woodland Hills, CA
| | - M. Singh
- Cedars-Sinai Medical Center, Los Angeles, CA; Immunocellular Therapeutics Ltd., Woodland Hills, CA
| | - J. S. Yu
- Cedars-Sinai Medical Center, Los Angeles, CA; Immunocellular Therapeutics Ltd., Woodland Hills, CA
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Rudnick JD, Phuphanich S, Chu R, Mazer M, Wang H, Serrano N, Francisco M, Black KL, Wheeler C, Yu J. A phase I trial of surgical resection with biodegradable carmustine (BCNU) wafer placement followed by vaccination with dendritic cells pulsed with tumor lysate for patients with malignant glioma. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.2033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
2033 Background: Our prior immunotherapy trials demonstrated efficacy in generating a tumor specific immune response in malignant glioma and the potential for high tumor-specific toxicity and sustained tumoricidal activity. Immunotherapy may synergize with chemotherapy and biodegradable carmustine (BCNU) wafers extend overall survival from 11.6 to 13.9 months. Methods: We exploited this synergistic effect to maintain a cytotoxic environment around the tumor milieu. Patients with high-grade glioma were eligible after maximal resection with biodegradable carmustine (BCNU) wafer placement. Screening leukapheresis is used to isolate mononuclear cells which are differentiated into dendritic cells, pulsed with tumor lysate, and then 3 intradermal vaccines are administered at 2-week intervals. Patients continued systemic chemotherapy after vaccine or at progression. Results: Eighteen patients have been enrolled (7 Male, 11 Female) between April 2007 and February 2009 with one screen failure and two patients with clinical progression prior to vaccination. The median patient age was 57 years (26 to 74 ) and median Karnofsky performance status was 90% (80–100). The histology included 3 newly diagnosed glioblastoma multiforme (GBM), 8 recurrent GBM, 2 newly diagnosed anaplastic astrocytoma (AA), and 2 recurrent AA. 15 patients were successfully treated by vaccine injections with 12 patients receiving vaccine every 2 weeks x 3 followed by adjuvant chemotherapy. Our preliminary data on 15 patients and 39 courses of Dendritic Cell vaccines demonstrate one grade 3 toxicity of fever/chest pain. A stable disease interval of 13 to 90 weeks was observed for patients who received vaccine. The 3 newly diagnosed GBM patients have stable disease (18 to 71 weeks). In the recurrent GBM cohort 7/8 patients had progression within 6 months from the post-vaccination MRI. Conclusions: This phase I study demonstrates the safety, feasibility of dendritic cell vaccination with biodegradable carmustine (BCNU) wafers with one grade 3 AE. Immunological data is pending to determine potential synergy of dendritic cell vaccination with intracranial chemotherapy. No significant financial relationships to disclose.
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Affiliation(s)
| | | | - R. Chu
- Cedars-Sinai Medical Center, Los Angeles, CA
| | - M. Mazer
- Cedars-Sinai Medical Center, Los Angeles, CA
| | - H. Wang
- Cedars-Sinai Medical Center, Los Angeles, CA
| | - N. Serrano
- Cedars-Sinai Medical Center, Los Angeles, CA
| | | | - K. L. Black
- Cedars-Sinai Medical Center, Los Angeles, CA
| | - C. Wheeler
- Cedars-Sinai Medical Center, Los Angeles, CA
| | - J. Yu
- Cedars-Sinai Medical Center, Los Angeles, CA
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Jimenez J, Iribarren J, Brouard M, Lorente L, Perez R, Palmero S, Henry C, Malaga J, Lorenzo J, Serrano N, Martinez R, Mora M. Clinical outcome and mortality associated with postoperative low cardiac output after cardiopulmonary bypass: a cohort study. Crit Care 2008. [PMCID: PMC4088612 DOI: 10.1186/cc6462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Díaz-Martínez L, Serrano N, Pinzón J, Mantilla G, Velasco H, Martínez L, Millán P, Acevedo S, Moreno D, Sus SE. [Lack of association between metabolic syndrome and depressive symptoms in Colombian adults]. Rev Med Chil 2007; 135:990-6. [PMID: 17989855 DOI: 10.4067/s0034-98872007000800005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND There is a possible association depressive symptoms (DS) and metabolic syndrome (MS), to the extent that treating one condition improves the other. AIM To estimate the association between MS and DS among the employees of a medical school. MATERIAL AND METHODS Cross sectional study of 159 people aged 41+/-11 years (88 men). MS was evaluated according to International Diabetes Federation (IDF), National Cholesterol Education Program (NCEP)/Adult Treatment Panel III (ATP-III) and ATP-IIIa criteria and the depression questionnaire of the Center for Epidemiológical Studies (CES-D) was used for DS. A multivariate logistic regression was performed adjusting for age and gender. RESULTS The prevalence of MS according to ATP-III was 13.2% (95% CI: 8.4-19.5), to ATP-IIIa was 34.0% (95% CI: 26.6-41.9) and to IDF was 33.3% (95% CI: 26.1-41.2). The prevalence of clinically relevant SD was 15.1% (95% CI: 9.9-21.6). No significant association was found between DS and MS according to the different criteria: ATP-III OR 1.30 (95% CI: 0.40-4.24), ATP-IIIa OR 0.94 (95% CI: 0.37-2.33), IDF OR 1.20 (95% CI: 0.49-2.95). CONCLUSIONS In this series, no association was observed between MS and depression.
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Affiliation(s)
- Luis Díaz-Martínez
- Centro de Investigaciones Biomédicas, Facultad de Medicina, Universidad Autónoma de Bucaramanga, Bucaramanga, Colombia.
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Serrano N, Díaz-Cruz J, Ariño C, Esteban M, Puy J, Companys E, Galceran J, Cecilia J. Full-wave analysis of stripping chronopotentiograms at scanned deposition potential (SSCP) as a tool for heavy metal speciation: Theoretical development and application to Cd(II)-phthalate and Cd(II)-iodide systems. J Electroanal Chem (Lausanne) 2007. [DOI: 10.1016/j.jelechem.2006.10.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Jimenez Rivera J, Iribarren Sarrias J, Nassar I, Alarco B, Diaz M, Perez R, Garcia C, Malaga J, Lorente L, Serrano N, Brouard M, Martinez R, Mora M. Crit Care 2006; 10:P223. [DOI: 10.1186/cc4570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Castedo J, Garcia C, Lorenzo J, Malaga J, Galvan R, Jimenez J, Iribarren J, Serrano N, Villegas J, Huidobro S, Henry C, Mora M. Crit Care 2006; 10:P20. [DOI: 10.1186/cc4367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Bellón JM, García-Honduvilla N, Serrano N, Rodríguez M, Pascual G, Buján J. Composite prostheses for the repair of abdominal wall defects: effect of the structure of the adhesion barrier component. Hernia 2005; 9:338-43. [PMID: 16132190 DOI: 10.1007/s10029-005-0012-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2005] [Accepted: 05/09/2005] [Indexed: 11/28/2022]
Abstract
The component of a composite prosthesis, which makes contact with the visceral peritoneum, can be reabsorbable or non-reabsorbable, and laminar or reticular. This study was designed to determine whether the composition of this second, barrier component could improve its behavior at this interface. Abdominal wall defects in rabbits were repaired using a polypropylene prosthesis (PP), or the composites Sepramesh (PP + h) or Vicryl (PP + v). Fourteen days after surgery, the implants were evaluated by light and scanning electron microscopy, and immunohistochemistry. Prosthetic areas occupied by adhesions (PP: 71.08 +/- 5.09, PP + h: 18.55 +/- 4.96, P + v: 69.69 +/- 16.81%), neoperitoneal thickness (PP: 256.17 +/- 21.68, PP + h: 83.11 +/- 19.63, PP + v:213.72 +/- 35.90 microm) and macrophage counts (PP: 8.73 +/- 1.16, PP + h: 27.33 +/- 4.13, PP + v: 31.24 +/- 3.08%) showed significant differences (P < 0.05). The tested biomaterials induced an optimal recipient tissue infiltration. Least adhesion formation was observed on the PP + h implants. This suggests that the second component, although reabsorbable, should be smooth in structure.
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Affiliation(s)
- J M Bellón
- Department of Surgery, Faculty of Medicine, Alcalá University, Ctra. N-II, Km 33.600, 28871, Alcalá de Henares, Madrid, Spain,
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Pascual G, Martínez S, Rodríguez M, Serrano N, Bellón JM, Buján J. Patency and structural changes in cryopreserved arterial grafts used as vessel substitutes in the rat. J Surg Res 2005; 124:297-304. [PMID: 15820261 DOI: 10.1016/j.jss.2004.10.016] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2004] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To evaluate the patency and structural changes that occur in the short- and mid-term when cryopreserved syngenic arterial grafts are implanted in an experimental animal model. MATERIAL AND METHODS Segments of iliac artery from the Spraque-Dawley rat were cryopreserved in a biological freezer according a controlled, computerized freezing protocol whereby the specimens are cooled at a rate of 1 degrees C/min. After storage at -145 degrees C in liquid N2 vapor for 30 days, the cryografts were slowly thawed. These vessels were grafted to the common iliac artery in syngenic animals. The following study groups were established: group I (GI), non-implanted cryografts; group II (GII), autografts; and group III (GIII), cryoisografts. The control group (CG) was comprised of fresh iliac arteries. The animals were sacrificed 14, 30, or 90 days post-surgery. At each of these follow-up times, graft specimens were morphologically evaluated by light and scanning and transmission electron microscopy and immunolabeling of endothelial cells (vWf). Cell damage attributed to the cryopreservation or grafting process was also determined. RESULTS At the time of sacrifice, graft patency was 100% for the autografts, while 26.6% of the cryoisografts showed fully occlusive thrombosis. Among other complications, two pseudoaneurysms were detected. After cryopreservation, the grafts (GI) showed patches of endothelial denudation and good cellularity of the medial layer. The intimal hyperplasia observed in autografts implanted for 14 days (GII) was significantly delayed until day 30 when the graft was cryopreserved (GIII). Cryoisografts showed general thinning of the arterial wall and degeneration accompanied by medial layer cell loss. These grafts showed most cell damage at 90 days post-implant. Expression of the vWf in all specimens showing intimal hyperplasia was confined to the outermost graft layer. CONCLUSIONS Cryopreservation modified the reparative response of the grafts. Owing to faster degeneration of the medial layer and a delay in the appearance of intimal hyperplasia, arterial wall thickness was reduced relative to that of the non-cryopreserved autografts. This thinning, at least in the short-term (90 days), does not seem to give rise to aneurysms owing to the generation of a neointima that stabilizes the vessel wall.
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Affiliation(s)
- G Pascual
- Department of Medical Specialities, Alcalá University, Madrid, Spain
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Bellón JM, Serrano N, Rodríguez M, García-Honduvilla N, Pascual G, Buján J. Composite prostheses used to repair abdominal wall defects: Physical or chemical adhesion barriers? J Biomed Mater Res B Appl Biomater 2005; 74:718-24. [PMID: 15977312 DOI: 10.1002/jbm.b.30248] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In a composite prosthesis, the component placed at the peritoneal interface takes the form of a physical or chemical barrier. In this experimental study performed on the white New Zealand rabbit, several composites were examined to establish the effectiveness of these barriers at impeding adhesion formation. The biomaterials tested were two polypropylene prostheses (PP) with the physical barriers of expanded polytetrafluoroethylene or polyurethane (PP + ePTFE and PP + PU) and two prostheses (one polyester and the other PP) with the absorbable chemical barriers of polyethylene glycol/glycerol and hyaluronate, respectively (PO + gl and PP + hy). The composites were used to repair 7 x 5 cm defects created in the abdominal wall of the animals by placing the implant in contact with the visceral peritoneum and the subcutaneous tissue and fixing it to recipient tissue by 4/0 polypropylene running suture. Fourteen days after surgery the animals were sacrificed and specimens were taken for light microscopy and scanning electron microscopy. Adhesions developing at the prosthesis/visceral peritoneal interface were quantified. All the prostheses induced optimal mesothelialization. Composites with physical barriers behaved similarly in terms of provoking adhesions. However, the prostheses with chemical barriers differed in their effectiveness at preventing adhesions. Overall, the best results were obtained with the PP + PU composite.
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Affiliation(s)
- J M Bellón
- Department of Surgery, Faculty of Medicine, Alcalá University, Ctra N-II, Km 33.600, 28871 Alcalá de Henares, Madrid, Spain.
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Maas R, Böger RH, Schwedhelm E, Casas JP, López-Jaramillo P, Serrano N, Díaz LA. Plasma concentrations of asymmetric dimethylarginine (ADMA) in Colombian women with pre-eclampsia. JAMA 2004; 291:823-4. [PMID: 14970060 DOI: 10.1001/jama.291.7.823] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Brull DJ, Serrano N, Zito F, Jones L, Montgomery HE, Rumley A, Sharma P, Lowe GDO, World MJ, Humphries SE, Hingorani AD. Human CRP gene polymorphism influences CRP levels: implications for the prediction and pathogenesis of coronary heart disease. Arterioscler Thromb Vasc Biol 2003; 23:2063-9. [PMID: 12842840 DOI: 10.1161/01.atv.0000084640.21712.9c] [Citation(s) in RCA: 227] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE C-reactive protein (CRP) concentrations are predictive of cardiovascular disease, and levels are heritable, in part. We identified novel polymorphisms in the CRP gene and assessed their influence on CRP level. METHODS AND RESULTS CRP was measured in 250 male army recruits before and after strenuous exercise and perioperatively in 193 coronary artery bypass graft (CABG) patients. Two novel polymorphisms were identified in the CRP gene, -717G>A in the promoter and +1444C>T in the 3'UTR. Among army recruits, CRP was higher in +1444TT homozygotes than +1444 C-allele carriers at baseline (1.04+/-0.38 versus 0.55+/-0.06, P=0.014) and at all time points after exercise (2.35+/-0.68 versus 1.07+/-0.12, 2.11+/-0.53 versus 0.88+/-0.09, and 1.77+/-0.44 versus 0.71+/-0.09, P=0.034, P=0.007, and P=0.013, at 2, 48, and 96 hours after exercise, respectively). In the CABG patients, mean CRP (mg/L) rose from 1.97+/-0.36 at baseline to 167.2+/-5.0 72 hours postoperatively. Genotype did not influence CRP at baseline; however, peak post-CABG CRP levels were higher in +1444TT homozygotes compared with +1444C-allele carriers (198+/-17 versus 164+/-5, P=0.03). CONCLUSIONS The CRP gene +1444C>T variant influences basal and stimulated CRP level. These findings have implications both for the prediction and pathogenesis of coronary heart disease.
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Affiliation(s)
- D J Brull
- Centre for Cardiovascular Genetics, BHF Laboratories at UCL, Royal Free and UCL Medical School, London, UK
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Melo-Cristino J, Ramirez M, Serrano N, Hänscheid T. Macrolide resistance in Streptococcus pneumoniae isolated from patients with community-acquired lower respiratory tract infections in Portugal: results of a 3-year (1999-2001) multicenter surveillance study. Microb Drug Resist 2003; 9:73-80. [PMID: 12705685 DOI: 10.1089/107662903764736364] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
A nationwide multicenter study (including 31 laboratories) of the antimicrobial susceptibility of 1210 Streptococcus pneumoniae isolates from patients with community-acquired lower respiratory tract infections (LRTI) was carried out over 3 years (1999-2001) in Portugal. Testing of all isolates was undertaken in a central laboratory. Overall macrolide resistance was 13.1%. Decreased susceptibility to penicillin was 24.5% (15.5% low-level and 9.0% high-level resistance). Taken into consideration, the resistance rates reported in a previous surveillance study of 1989-1993, a six-fold increase of erythromycin resistance in the last decade was documented. Resistance to erythromycin, clarithromycin, and azithromycin was higher in pediatric patients than in adults. The overwhelming majority (82.3%) of macrolide-resistant isolates were multidrug resistant, although 44.9% were fully susceptible to penicillin. Most macrolide-resistant isolates (80.4%) showed the MLSB phenotype (76.6% MLSB-constitutive resistance, and 3.8% MLSB-inducible resistance) and were also resistant to clindamycin, tetracycline, and co-trimoxazole. The M phenotype was seen in 19.6% isolates and these had MIC90 values of 8 mg/L for erythromycin and clarithromycin, and of 12 mg/L for azithromycin. The clinical significance of macrolide resistance in the management of LRTI is discussed. Because of the specific situation concerning macrolide resistance described in S. pneumoniae, careful use of macrolide antibiotics in therapy and cautious monitoring of macrolide resistance should be continued in Portugal.
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Affiliation(s)
- J Melo-Cristino
- Laboratory of Microbiology, Institute of Molecular Medicine, Faculty of Medicine, University of Lisbon, 1649-028 Lisbon, Portugal.
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Granados-Rojas L, Serrano N, Gutiérrez-Ospina G, Díaz-Cintra S. Prenatal protein malnutrition differentially affects the volume of the granule layer and mossy fibers in young male and female rats. Proc West Pharmacol Soc 2003; 45:53-4. [PMID: 12434526] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Affiliation(s)
- L Granados-Rojas
- Departamento de Neurobiología del Desarrollo, Centro de Neurobiología, UNAM-UAQ-Juriquilla, P.O. Box 1-1141, Querétaro, Qro. 76001, México.
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Abstract
Preeclampsia is the main cause of maternal mortality and is associated with a five-fold increase in perinatal mortality in developing countries. In spite of this, the etiology of preeclampsia is unknown. The present article analyzes the contradictory results of the use of calcium supplementation in the prevention of preeclampsia, and tries to give an explanation of these results. The proposal of an integrative model to explain the clinical manifestations of preeclampsia is discussed. In this proposal we suggest that preeclampsia is caused by nutritional, environmental and genetic factors that lead to the creation of an imbalance between the free radicals nitric oxide, superoxide and peroxynitrate in the vascular endothelium. The adequate interpretation of this model would allow us to understand that the best way of preventing preeclampsia is the establishment of an adequate prenatal control system involving adequate antioxidant vitamin and mineral supplementation, adequate diagnosis and early treatment of asymptomatic urinary and vaginal infections. The role of infection in the genesis of preeclampsia needs to be studied in depth because it may involve a fundamental change in the prevention and treatment of preeclampsia.
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Affiliation(s)
- P López-Jaramillo
- Instituto Colombiano de Investigaciones Biomédicas (ICIB), Bucaramanga, Colombia.
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Melo-Cristino J, Fernandes ML, Serrano N. [Antimicrobial susceptibility of Streptococcus pyogenes, Haemophilus influenzae, Streptococcus pneumoniae and Moraxella catarrhalis from community acquired respiratory infections in 2000]. ACTA MEDICA PORT 2001; 14:459-68. [PMID: 11878155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
The Viriato Study is a nationwide, multicenter prospective study of the antimicrobial susceptibility of bacterial pathogens commonly associated with community-acquired respiratory tract infections in Portugal. In 2000, 28 laboratories participated in the study with a total of 1071 strains, with testing undertaken in a central laboratory. Of the 213 Streptococcus pyogenes strains isolated from patients with acute tonsillitis, all were susceptible to penicillin, amoxicillin/clavulanate and cefuroxime, but 21.1% were resistant to erythromycin, clarithromycin, azithromycin and 16.4% to tetracycline. From patients with lower respiratory tract infection, 403 strains of Haemophilus influenzae, 366 of Streptococcus pneumoniae and 89 of Moraxella catarrhalis were studied. 13.1% of H. influenzae and 94.4% of M. catarrhalis produced beta-lactamase. Among S. pneumoniae isolates, 25.1% were resistant to penicillin (8.8% showing high-level resistance), 14.5% to tetracycline, 12.8% to erythromycin, clarithromycin and azithromycin, and 10.1% to cefuroxime. Overall, penicillin was the most active antimicrobial against S. pyogenes and amoxycillin/clavulanate the most active in vitro simultaneously against H. influenzae, S. pneumoniae and M. catarrhalis isolated from patients with community-acquired LRTI in Portugal.
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Affiliation(s)
- J Melo-Cristino
- Laboratório de Microbiologia, Faculdade de Medicina de Lisboa, Instituto Bacteriológico Câmara Pestana, Lisboa
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Melo-Cristino J, Fernandes ML, Serrano N. A multicenter study of the antimicrobial susceptibility of Haemophilus influenzae, Streptococcus pneumoniae, and Moraxella catarrhalis isolated from patients with community-acquired lower respiratory tract infections in 1999 in Portugal. Microb Drug Resist 2001; 7:33-8. [PMID: 11310801 DOI: 10.1089/107662901750152747] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
A nationwide multicenter study (including 25 laboratories) of the antimicrobial susceptibility of bacterial pathogens commonly associated with community-acquired lower respiratory tract infections (LRTI), with testing undertaken in a central laboratory, was conducted in Portugal in 1999. Antimicrobial resistance in Haemophilus influenzae has not increased in the last decade. Of the 498 isolates tested, 12.4% produced beta-lactamase and >95% were susceptible to all antimicrobials except ampicillin. In contrast, there was a rapid increase of resistance in Streptococcus pneumoniae. Of the 312 isolates tested, 24.7% exhibited decreased susceptibility to penicillin (13.5% showed low-level and 11.2% high-level resistance), 13.8% were resistant to erythromycin, clarithromycin and azithromycin, and 13.6% to cefuroxime and to tetracycline. Of the 38 Moraxella catarrhalis tested, 81.6% produced beta-lactamase. Resistance to penicillin, cefuroxime, erythromycin, clarithromycin, and azithromycin in S. pneumoniae and beta-lactamase production in H. influenzae were significantly higher in pediatric patients than in adults. Overall, amoxycillin/clavulanate was the most active antimicrobial agent in vitro against H. influenzae, S. pneumoniae, and M. catarrhalis isolated from patients with community-acquired LRTI in Portugal.
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Affiliation(s)
- J Melo-Cristino
- Laboratório de Microbiologia, Faculdade de Medicina de Lisboa, Instituto Bacteriológico Câmara Pestana, Portugal.
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Sierra B, Serrano N, Larrañaga P, Plasencia EJ, Inza I, Jiménez JJ, Revuelta P, Mora ML. Using Bayesian networks in the construction of a bi-level multi-classifier. A case study using intensive care unit patients data. Artif Intell Med 2001; 22:233-48. [PMID: 11377149 DOI: 10.1016/s0933-3657(00)00111-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Combining the predictions of a set of classifiers has shown to be an effective way to create composite classifiers that are more accurate than any of the component classifiers. There are many methods for combining the predictions given by component classifiers. We introduce a new method that combine a number of component classifiers using a Bayesian network as a classifier system given the component classifiers predictions. Component classifiers are standard machine learning classification algorithms, and the Bayesian network structure is learned using a genetic algorithm that searches for the structure that maximises the classification accuracy given the predictions of the component classifiers. Experimental results have been obtained on a datafile of cases containing information about ICU patients at Canary Islands University Hospital. The accuracy obtained using the presented new approach statistically improve those obtained using standard machine learning methods.
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Affiliation(s)
- B Sierra
- Department of Computer Science and Artificial Intelligence, University of the Basque Country, P.O. Box 649, E-20080, San Sebastián, Spain.
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Serrano N, Mora ML. The "breathing-bag" sign in the diagnosis of tracheoesophageal fistula in patients receiving mechanical ventilation. Chest 2000; 117:1217-8. [PMID: 10767275 DOI: 10.1378/chest.117.4.1217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Abstract
Adrenal insufficiency after cardiac surgery can easily be confused during the course of an immediate unstable postoperative period. If unrecognized, this condition may cause serious morbidity and can be fatal. We report on a 43-yr-old female patient with chronic known adrenal insufficiency, who, despite her adequate preoperative replacement therapy, presented with one episode of acute hypoadrenal crisis after elective open heart surgery, which could serve as a model to illustrate the salient clinical features and possible problems in this setting for diagnosing this problem to patients in whom chronic adrenal insufficiency remains unknown.
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Affiliation(s)
- N Serrano
- Hospital Universitario de Canarias, Universidad de La Laguna, Intensive Care Unit, Tenerife, Canary Islands, Spain.
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Cristino JM, Fernandes ML, Garcia T, Serrano N, Salgado MJ. [The diversity of Staphylococcus aureus strains isolated in a Lisbon hospital over a 4-year period]. ACTA MEDICA PORT 1999; 12:169-76. [PMID: 10481318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
Abstract
Over a 4-year period, 2020 Staphylococcus aureus strains isolated in Santa Maria Hospital were studied, 26.3% of which were methicillin-resistant (MRSA). The main specimens from which the strains were isolated included pus, blood and sputum/bronchial secretions. Isolation in blood cultures was the most common source among patients from medical units. Antimicrobial susceptibility studies showed that while in methicillin susceptible strains sensitivity to other antimicrobial agents (apart from penicillin resistance) was the rule, in MRSA strains there was resistance to most antibiotics. Only vancomycin was active against all strains. Phage typing showed that 75.5% of the strains were typable with phages at 100 x R.T.D. Among methicillin sensitive strains, a big diversity of phage patterns was observed, including phage groups I, II, III and V, as well as with phage association D11/95. The large majority of MRSA strains were lysed by group III phages, although several distinct patterns were observed. Within these strains, lysis by groups II and V phages was not observed. Plasmid profiling was the least discriminant issue in the characterization of these micro-organisms because most of the strains harboured only one plasmid (or none). These results showed that a dominant MRSA strain did not exist in this hospital, but rather several distinct strains. The importance, as well as the difficulties in controlling the spread of MRSA strains in the present conditions of high prevalence, are highlighted.
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Affiliation(s)
- J M Cristino
- Laboratório de Microbiologia, Faculdade de Medicina de Lisboa
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